Nowadays, college students bought more books because of their diverse needs. They didn't only focus on professional books like in the past. Nowadays, college students would generally choose books according to their interests and needs. For example, reading novels, reading history, reading philosophy, reading science fiction, and so on. Different subjects had different needs, so the types of books they bought would also be different. In addition, college students would also buy some study-related reference books, teaching materials, and tutoring books to better learn and master knowledge.